Crown block pulley



March 8, 1932. Y H. B. oURsLER 1,848,379

CROWN BLOCK PULLEY Filed May 9, 1929 2 Sheets-Sheet l Marcha, 1932.

H. B. ouRsLER `1,848,371)

CROWN BLOCK PULLEY Filed Maly 9, 1929 l2 Sheets-Sheet 2` L@ f Z; 25

Y gwnto fili' umle;

atte/cmq y Patentedh/lagu, i932.;

enanas i ferowarinfn 'OUR-snm, orfnrr'sennsm rnNNsYLvAN'IA1- i cixnoivvifr,iBLoeK` PULLEY s i delineation -e1ea. may adage.' seriarim. asifvealf The invention relates to improvements in A 'plate.`

Crown hlockv pulleys.

when thefrimlhecomes Worn', ofenahlingthe sametohe readlly'renewed afcomparativeiy low 'costi-relative to the'costofthe pulley andy Without 4discarding the body portion off-thepulley. l

"A further@ ohje'ctjof theinvention is-to equip the removable: @drown f bloede-pulley yvith" means forloclringthefholtswith absolutese-y curity so "thatjthere vvill loe no liability of-'ac- @idents resultingironl the looseningofrini holt/sof' pulleys 4havingf,-reinevahle rvrims and pairs and 'located-attheq` opposite faces ofthe rweh' and yproviding spoke-like'forms which' operating at highl speed and athigh elevations vWhere any loosenessfofv the rim-bolts lis gen-- erallynot discovered until' too -flateto avoid an accidenti' Y s j Y .(Withthse and other'vohjeets inlviewyreferi ence'Willlhe had to the following description,A

togetherfwitli'fthe `accom'panying drawings forming parthereof,y and While have shown a speci-fleeembodiment;it'vill be un that I may Vresort to minor chang- Vvarious details7 and similarlythat-'th'e nish l or arrangement ofparts maybe varied lo snit requirements so 1 longz asl they do not depart j from the scope or spirit ofthe claims hereunto appendedfl` y In the' drawings-1 'Y Y `4 yFigurel is a side elevation, partly in sere'- tion'of a. removable"rimV erwn block pulley, constructedinaecordanee 'with this invention'.

2 isl a transverse sectional view;

, suhstantiallylon the line 242 efllig; l.

F 1g. 3 is atransverse sectional view on thel line 3-3 of Figlf Fig; 4 is a detail'isectional view on-the line i-4 of Fig. j Y i Fig. 5 isa Vsinnlarvi'evv on the linea-5 of I Y y 'Y Fi .:isa detail lon Uit'ndinal sectional View ofone'of the boltloclnng devices., f r Fig/Z isa detail view' of the veoactv platee? Je i, f

4V"the bolt locking4 devices derstood.-V n' ithe taken rig?l s is @pian v ie'y @e the beltf'iociang In theaecompanying ldrawings invvhieh isf illustrated the preferred embodiment of the invention; the removablerimfj Crowny block thickened peripheral portion' 3,' vall Yformed j' integral' to,v one another,K the thickened f pe ripheral portion lforminga seat fora paipof 1 seniifcircular removablefrim'v sections l arranged on the saidseatandsecuredto the- Sarneby end bolts 5 and intermediate-'bolts 6. The disljveb port-ionff?l is preferably fre' 'inforc'ed Lat` diametrically fopposite pointsl WithV radially arranged' ribs yfal'ranged (in reinforce thebody jofthe"pulley y f i The rimfsectio'ns Whic'hfare groovedrat8 to receive a cable'orother line,-ttightlyagainst the peripheral portionof the-body off-thei-A pulleyand have their ends nttedtightly 'together andthe saidfholts' and `-`6 extendVv through openingsQand 10 in thebody'portin ofthe pulleyandengage threaded openings l1"inthe riifn"sections:V ofthe pulleyf "llhfei-.y threaded openingsllin the rim sections prefserably terminate'short of the outer periphery of the lriln `andarefinthi nature offthreade'd l k sockets toreceive the .o1-iter threaded portions` i of the bolts and Theheadsof thelooltfsv t .f5 engagerat faces or shoulders12of'hosses or enlargements llo'cated adjacent the end f portionsof the rim seetions andformed integralrzith the body of they pulley;lat-oppositel sidesofthe peripheral portion thereof.' Y f The 'headsgof thefbo'lts 6 engage latfaces or shoulders of "bosses or A enlarr-gementsl5?v located adjacent thecentralportions of lthe rim sections and formeddntegral Withlthe'Y .hodyof the pulle'ya't oppositesides thereof. Y. i

The web of v the pulleyjgis provided i between. l95

j the spolef formations Withfcircular*openings 16, tivo offWhichzarefloeated iadjfaeenhtheik heads of the bolts 6, as clearly illstrated in;

*.Fig'.:1' of thefdravvings;fand the otherfftwo l a ,Openings are located "diametrically opposite mf' s pulley. comprisesinits construction a pulley I hodydesigned to be construeted-ofastmetal'rv Yorother suitable material.andyeonsistinglofa central'fhubportion 1,-'a disk Wehfjand a i seY mi i i,

each other in line with the end portions of the rim sections. The openings are designed to facilitate access to the bolts andto locking means for engaging the heads of the bolts to revent the bolts from being loosened by any )ar 0r vibration to which the crown block pulley may be subjected.

The end bolts 5 are locked by fastening devices which are located at opposite sides of the body of the pulley and extend longitudinally of the rim secti0ns,as clearly illustrated in Fig. 4 of the drawings, and the intermedi*` ate bolts are engaged by simple locking devices disposed transversely of the body portion of the pulley and extending through the adjacent openings 16. The heads of the bolts are preferably hexagonal and each pair is engaged .by alock plate 17 which is provided at its ends Withtapering notches 18 conforming to the lconfiguration'of and adapted to receive the corner portions of the heads ofk the bolts, as clearly illustrated in Figs. 4 and 5.of the drawings.` n n' The lock plate is of a length to fit snugly between a pair of bolts and extends longi` tudinally of the rim at the Vend portions thereof and transversely of the rim at the central portion of the same. The engagement of the corner portions of the hexagonal `heads o f the bolts will enable the bolts to be adjusted every sixth rof a revolution of the bolt so that a comparatively line adjustment Y is obtained. After the'bolts have been tightened and their heads arranged with a corneiof each pair of bolts opposite each other, the lock plate is placed in position. y

The lock plate is secured in its engaging position kby means of acontact plate 19 having yrounded ends presenting substantially :onvex end edges to the bolt heads and adapted to be turned on a connecting bolt 20 to engage theends of the contact plate in corner notches 21of the bolt heads. The coni tact plater is of a thickness to fit snugly and tightly in the corner notches 21 and it is preferably filed slightly at diagonallyv opposite corners at 22to enable it to enter readily the notches, and the distance between the extreme abuttingportions of the rounded ends of the contact plate is such that when it is engaged in the notches of the bolt heads there will be no longitudinal play of the contact plate. The contact plate and the lock plate are drawn tightly togetherby'means of the connecting bolt20 having ahead 22 countersunk in the lock plate and extending through register openings 23 and 24 in the contact and lock plates and equippedwith a nut 25 arranged on the threaded portion of the 'connecting bolt and engaging the contact plate and holding the same in tight frictional engagement with both the lock plate and theI bolt heads.

In Lorderto maintainthe plates in such engagement the nut 25 is located on the con- ,site sides of the body of the pulley and by extending longitudinall of the rim do not require openings in the ody for the convenient manipulation of such locking devices. hen

the bolts are locked they are securely held against rotation and the rim sections will be positively and securely held on the body of the pulley until the rim is Worn to such an extent as necessitates renewal which ma be had at arelativcly low cost compared wit the cost of the pulley. A Worn rim may be readily removed by compressing the split end por-v tion ofthe connecting bolt and thenv loosening the nut thereof. yThis will relieve the `contact and lock plates of pressure and will enable the contact plate to be readily turned out of engagement with the notches of the bolt heads.' When the contact plate is swung clear of the bolt heads the bolt locking devices maybe readily removed the removal of the bolts and the ready renewal of the rim of the pulley.

The lugs or enlargements 15 are of greater length than the lugs or enlargements 13 in order to arrange the locking devices of the intermediate bolts at the adjacent opening 16, andthe intermediate bolts are corresponding- `ly increased in length to enable them to extend through the lugs or enlargements 15 to the rim sections. y f

What is claimed is: LA removable rim` pulley comprising a pulley body provided at its periphery Wit i a seat, rim sections arranged on the saidk sea-t,

bolts arranged 1n pairs at the ends of the rim sections and at intermediate points, the end bolts beingspaced apart longitudinally of the rim and the vintermediate bolts being which will permit c spaced apart transversely of the rim, locking y devices engaging the bolts of each pairv and disposed longitudinally of the rim at the end ofthe rim sections and arranged transversely of the rim` at the intermediate bolts.

2. A removab'lerim pulley comprising a pulley `rbody provided at its periphery with a seat, rim sections arranged on the said seat, bolts arranged in pairs at the ends of the rim sections and at intermediate points,the y f end bolts'being spaced apart lon tudinally of the rim and the' intermediate olts being l spaced apart transversely of the rim, locking devices engaging the bolts of each pair and openings through Which the transverse lock- ,y

disposed klongtudinally ofthe rim at the end of thefrim sections and arranged transversely of the rini at the intermediate bolts, said body portion being provided at the said bolts With lugs presenting flat faces, the lugs of thein-l termediate bolts being extended and thev body portion of the pulley being provided With ing devices pass'.

3. A removable rim pulley comprising a.

pulleybody provided atits peripherywith a vseat, rim sectionsarranged on tneyk said seat, bolts arrangedin pairs at the ends ofthe rim sections and at intermediate points, the end bolts being spaced apart longitudinally of the rimand the intermediate bolts being spaced apart transversely of the rim', lockingdevices engaging the bolts ofeach pair and disposed longitudinally of 'the rimat the end o1 the rim sections and arranged transversely of the rim at the intermediate bolts, said body portion being providedat the transverse locking devices with openings throughV which the saine pass. l d 4. A removable. rim pulleycomprising a body portion consisting of a hub integral Web and integral peripheralportion enlarged to form a seat, riin sections arranged on the said seat, intermediate and endbolts mounted on the peripheral portion of `the body yand en- Qgaging the rim sections and arrangedin eing spaced yapartlongitudinally of the rim and the intermediate bolts being spaced apart transversely of the rim, lockingdevices for the said bolts, the locking devices for the end bolts being disposed longitudinally of the rim and the body portion ofthe pulley .beingA provided with openings through Which pass the locking devices for the intermediate bolts.

5. A removable rim pulley comprising a I pulley body and yremovable rim sections,

spaced bolts mounted on the pulley body and lengagingthe'rim sections and arranged in aoLY ` pairs and provided With polygonal'heads and locking devices for the saidV bolts including alock plate bridging thespace between the i bolts of each pair and having terminal/recesses arranged to receive the corners of the Y boltheads'to hold thebolts against rotation,

d a contact plate pivotally connected With and carried bythe lock plate and detachably interlocked Wit-h 'the boltheads'lto hold the lock plater against outward' movement'and adapted to be swung into and out of suchengageinent, and means for securing the contact plate in engagementwith bolts.

6. A removable rim pulley comprising a pulley body and removable rim 'sectionsj bolts mounted on the pulley body and engagingthe rim sections, and arranged in pairs and provided with polygonal headsvand lock? 'ing devices tor the said boltsfinrcluding a lock yplate bridginffvthe space between the bolts of` each pair and provided with terminal recesses Varran Y engagement,

pairs, the members of each pair of end bolts heads;ftheflatter-being also provided inrk its cornerss Witli'rnotches, andfaapi'voted. Contactfredl to'receive .the corners of the` bolt-A.

plate;1I'nountedy oir-and carried by the look plateand varranged 4to,` swing intoand out oi:

boltheadsf'. to;` detachably interlock the convfith thecorner notches ofthe tactfplate-swvith'thebolts for holding the lock platevagainst ioutward. movement.

7. LA? :removable .rini pulley comprising a` pulleybody andfreinovablerim sections, bolts d ulley; body and engaging the; grime sections@ and i arranged ink -fp airs land providedwith polygonal headsand lockingv devices forithe saidbolts including a loch rplatef;extendiiig. `betvfeenwthev bolts of eaeh air and pr'ovidedlvvith'terminal recesses to receive'.thecomersrot the .bolt heads, the latter being provided at their .corners with notches.

a Contact rplate eX ending longitudinally oi.

the lock plate and engaged kWith opposite notchesof the bolt heads Yand detachably interlocked therewith and holding the lock plates against outward movement, and a connecting bolt pierciofY the loch plate and the Contact plate and detachably connecting saidy plates and havinga nut foi-clamping the Contact plate in tight engagement with the lock plate and the bolt heads, said Contact platenbeing adapted'to be swunginto and out of engagement with the not clamped bythe nut.

8.. A removable riin pulley comprising a @body portion consistingof a hub, aweb and tendingthrough the opening. and engaging' the heads of the bolts of each pair to hold the saine against rotation, a contact plate `pivot- `ally connected with theilocl plate and interlocked with ther-bolt heads and holding the lock plate'against outward movement and adapted tosvving into and out of such interlocled L Contact plate interlocled Withthe bolt heads.

9; A pulley comprising a body, including a hub and peripheral sea-t, and a sectional rim removably mounted on said seat, means at opposite sides of thel bodyv bridging the joints between and connecting the ends oithe rim sections, and other means extending transversely oi the bodyl and connected to bolt heads when opening,` a lock plate eX-y relation, and means for securing the the respective rim sections intermediatetheir K endsand at opposite sides of the body.

l0. A pulley comprisinga body, including a hub and peripheral seat, an' intermediate Weband a sectional rim kremovably mounted on the said seat, of means at opposite sides of the web connecting the adjacent ends of the rim sections to the seat, and other means connecting the respective rim sections inter# mediate their ends to the seat and web at opposite sides of the latter.

11. A pulley comprising a body,

' web and a sectional rnn removably mounted y'on the said seat, of means at opposite sides of the web bridging the joints between and connecting adjacent ends of the rim sections, and other means extending across the web and connecting thek respective rim sections intermediate their ends. Y

In testimony whereof I have hereunto set my hand this 3rd day of May, 1929.

HOWVARD B. OURSLER.

, v including f a hub and peripheral seat, an intermediate 

